Textile thread piezoresistive transducer for airflow characterization
Résumé
The development of piezoresistive thread for characterizing airflow in the civinity of filters implemented in Heating, Ventilation and Air Conditioning (HVAC) systems is presented. These threads exhibit a sensitive response with a gauge factor of 25 over 10000 cycles of elongation at 5% strain. The thread is then integrated in a laboratory scale ventilation duct to demonstrate that it can discriminate airflow speed between 1 and 3 m.s-1, which is within the range of interest of HVAC systems.